Crossing over happens in prophase I when the homologous chromosomes are sy naps ed. The two inner chromoatids exchanges sections with each other. This means that after the exchange the inner two chromatids have new combinations of alleles than their parents had. The two outer chromatids still have the parental combinations.So there are more kinds of chromatids ready to go into the gametes than there were before. This is an increase in variation.
Answer:
The steps in translation are:
- <em>The ribosome binds to mRNA at a specific area.
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- <em>The ribosome starts matching tRNA anticodon sequences to the mRNA codon sequence.
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- <em>Each time a new tRNA comes into the ribosome, the amino acid that it was carrying gets added to the elongating polypeptide chain.
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- <em>The ribosome continues until it hits a stop sequence, then it releases the polypeptide and the mRNA.
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- <em>The polypeptide forms into its native shape and starts acting as a functional protein in the cell.</em>
Explanation:
Answer:
AAcc, Aacc, and aacc
Explanation:
Wild-type coat color, agouti (AA) is dominant over solid color fur (aa).
Gene C is needed for pigmentation, otherwise, the result is albinism.
Possible genotype for agouti color: AAC_ or AaC_
Possible genotype for solid color: aaC_
Recall that in order for the genotype to be an albino, gene C needs to be absent.
Animalia, fungi , plantae , eubacteria,protista , archaebacteria
Similar embryonic development and similar DNA suggest that organisms share a common ancestor in the past.